I actually like the water model. Here is a transistor: http://imgur.com/a/vhrmR http://imgur.com/a/vhrmR It breaks down as an analogy as soon as magnetic fie

I actually like the water model. Here is a transistor: http://imgur.com/a/vhrmR http://imgur.com/a/vhrmR It breaks down as an analogy as soon as magnetic fields come in to play, which is pretty much any AC circuit.